Table 3.
Summary of results for the acoustic and thermal simulations for both single focus and multifoci sonications (8 mm target region).
| Heating phase | Focus mode | No. of conc. foci | Mean T in mask (°C) | Peak T (°C) | T10 (°C) | T90 (°C) | T10–90 (°C) | Appl. power (W) | Max. intensity (W/cm2) | Max. pressure (MPa) | CM of 40.5 °C vol. in beam path dir. (mm) | Vol. above 40.5 °C (mm3) | 40.5 °C vol. diam. (mm) | 40.5 °C vol. length (mm) | 40.5 °C vol. length to diam. ratio | Heating energy efficiency (mm3/J) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4 mm | ||||||||||||||||
| subtrajectory | Single focus | 1 | 40.92 | 41.17 | 41.08 | 40.73 | 0.35 | 3.49 | 74.09 | 1.52 | −2.35 | 113.68 | 4.48 | 10.2 | 2.28 | 0.54 |
| heat-up, | Multifoci | 8 | 40.87 | 41.13 | 41.01 | 40.70 | 0.31 | 3.74 | 15.34 | 0.69 | −1.34 | 108.12 | 4.36 | 7.2 | 1.65 | 0.48 |
| t = 60 s | ||||||||||||||||
| 8 mm | ||||||||||||||||
| subtrajectory | Single focus | 1 | 40.80 | 41.52 | 40.96 | 40.67 | 0.29 | 4.19 | 82.43 | 1.61 | −6.97 | 827.61 | 8.8 | 16.5 | 1.88 | 1.65 |
| heat-up, | Multifoci | 16 | 40.79 | 41.02 | 40.92 | 40.64 | 0.28 | 3.96 | 7.37 | 0.48 | −3.78 | 565.75 | 7.96 | 11.25 | 1.41 | 1.19 |
| t = 180 s | ||||||||||||||||
| 8 mm | ||||||||||||||||
| subtrajectory | Single focus | 1 | 40.78 | 41.37 | 40.92 | 40.65 | 0.27 | 2.81 | 55.30 | 1.32 | −7.14 | 932.01 | 9.12 | 16.8 | 1.84 | 0.79 |
| maintenance, | Multifoci | 16 | 40.75 | 40.93 | 40.85 | 40.65 | 0.20 | 2.71 | 5.04 | 0.40 | −4.45 | 666.40 | 8.4 | 11.7 | 1.39 | 0.59 |
| t = 600 s |
Note: No. = number; conc. = concurrent; T = temperature; appl. = applied; max. = maximum; CM = center of mass; dir. = direction; vol. = volume; diam. = diameter.